SMP support for ZEDBOARD

[Bernd Walter]

On Tue, Apr 29, 2014 at 10:57:41PM +0200, Bernd Walter wrote:
> On Tue, Apr 29, 2014 at 01:21:05PM -0700, Thomas Skibo wrote:
> > 
> > 
> > On 4/29/14, 11:34 AM, Bernd Walter wrote:
> > >On Tue, Apr 29, 2014 at 09:40:53AM -0700, Thomas Skibo wrote:
> > >>
> > >>My parallella hasn't shipped but I think I'll get it mid-May.
> > >
> > >Backer or preorder?
> > >I have a rather high 3k backer number.
> > 
> > Preorder #2081.  Mine is a 7010 and for some reason I think they are 
> > going out later than 7020's.
> 
> Yes - they likely will :-(
> They produced 7020 for the backers and I think there are also some
> or all for preorders, but I didn't hear anything about 7010 in production
> yet.
> 
> > >>It will probably require tweaking their version of u-boot.  I'm looking
> > >>into that.  But the Zedboard image with a few modified boot files should
> > >>work.
> > >
> > >Good to know that you get a parallella as well.
> > >I still struggle a lot with all this Linux influence in u-boot.
> > >I will never get those Linux thinking...
> > >Things had been so much easier without u-boot on RM9200 and Warner
> > >did a so clean, nice and understandable bootcode for it.
> > >
> > 
> > I looked at their u-boot code and they don't have the CONFIG_API flag 
> > necessary for ubldr to work.
> > 
> > I also didn't realize that the Parallella must boot FSBL/u-boot from the 
> > QSPI flash.  I hate to require reprogramming the QSPI flash and risk 
> > bricking the board.
> 
> Oh - interesting.
> I thought it is just booting from SD and assumed we can use what you
> did for the Zedboard to begin with.
> Wonder why they added a flash chip, when they could have gone without.
> Is this a pin strapping configuration, or something, which can be
> changed?

Mmm - ok they have an QSPI Micro Flash in their BOM.
Currently printing the schematics.

But my Zedboard also has SPI memory - Spansion S25FL256S.
Don't know how it is used - didn't care about until now.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.